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J. D. WESTGATE.

STOP MOTION FOB. LOOMS.

No. 430,452 Page vted June 17, 1890.

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.L D. WBSTGATB.

STOP MOTION PORLOOMS.

Patented June 17, 1890.

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UNITED STATES PATENT OFFICE.

JOSEPH D. WESTGATE, OF WORCESTER, MASSACHUSETTS, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO ARGALIS P. BUTLER AND SAMUEL MAWHINNEY, BOTH OF SAME PLACE.

STOP-MOTION FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 430,452, dated June 17, 1890.

Application tiled February 15, 1889. Serial No. 299,994. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH D. WEs'rGA'rE, a citizen of the United States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Improvement in Stop-Motions for Looms, of which the following is a specification, accompanied by drawings forming a part of the same, and showing such parts of a loom as are necessary to illustrate the nature of my invention and the construction and operation of the same.

Figure 1 represents the top of aportion of a lay witha part of the warp and woven fabric, showing the method of operating my irnproved stop-motion by the action of the weftthread. Fig. 2 is a front view of a portion of the lay, with my improved stop-motion attached. Fig. 3 is a top and sectional view of the portion of the lay, as shown in Fig. l, the warp being removed and the section taken on line Z Z, Fig. 2. Fig. .4 represents a portion of the loom-frame and lay in sectional view on line X X, Fig. 3. Fig. 5 is a view in sectlon of a portion of the loom-frame and lay, taken on line Y Y, Fig. 3. Fig. 6 represents 1n perspective view that portion of my improved stop-motion which is attached to the central section of thelay, the relative position of the lay being indicated by broken lines. Fig. 7 represents in enlarged View a portion of the bar attached to the breast-beam and projecting toward and beneath the lay and by which the latching mechanism attached to the central section of the lay is operated; and Fig. 8 represents the projecting bar or dagger which is attached to the shipping mechanism of the loom.

Similar letters refer to similar parts in the several views. A

My invention relates to a stop-motion for looms by which the loom is stopped by the failure of the weft-thread, and the stoppage is effected upon the forward swing of the lay of the loom in which such failure of weft-thread occurs; and it consists in the construction and arrangement of the parts, as hereinafter set forth, and claimed in the claims.

In the accompanying drawings, A A denote the sides or portions of the frame-work of the loom.

B is the breast-beam; C, the lay; C', thev across which the shuttle D is thrown one side to the other, in the race, alternately from manner common in the operation of weaving.

E represents the warp, and E the woven fabric, which passes over the breast-beam B to the cloth-winding drum below, and not shown in the accompanying drawings.

E2 denotes the line of weft-thread extending from the selvage edge of the cloth to the shut,- tleD, and E3 represents the reed by which the weft-thread is beaten up at each forward swing of the lay.

To the central section of the layI attach an angular plate F, which supports a latch F', pivoted at one end upon a bolt a held by the plate F, and also the four-armed gate pivoted upon the bolt b, held in the lugs c c, and having the arms d, e, f, and g, Fig. 8. The plate F is provided with alip h2, between which and the upper edge of the latch F is placed the arm g, thereby preventing the latch F from rising, as during the for-ward swing of the lay the forward or free end of the latch is brought in contact with the dagger G, Fig. 4, attached by a set-screw to a rocking rod or shaft G beneath the breast-beam. The rod or shaft G is so connected with the mechanism for shipping the belt from the driving-pulley of the loom, or otherwise disconnecting the operative parts of the loom from the drivingpower, that the forward end of the latch F as it passes over the dagger G will depress the free end of the dagger and rock the shaft, causing the loom to be disconnected from the driving-power.

The connection between the rocking rod or shaft G beneath the breast-beam and the shipping devices I have not herein described in detail nor shown in the drawings, as .the construction and operation of this part of the stop-motion are well known, they being in general use upon looms. I have therefore confined both description and illustration to those parts of the stop-motion v by which the rod or shaft G is rocked as determined bythe presence of the weft-thread, that partV only' being concerned in my present invention.

To the front side of the lay and at each side of the central section I attach plates H H', provided with lugs, in which I journal the short spindles h h, each of the spindles being provided at its upper end with a bent wire or iin ger j, bent first outwardly toward the ends of the lay, then upwardly a short distance above the race of the lay, then rearwardly over the race, and then upwardly at or nearly at right angles to the race of the lay, and forming a vertical section or tip against which the weft-thread is brought as the shuttle is thrown across the race. From the lower end of the spindles H H arms kk extend outwardly, connected by the rods or links m m with the arms c and f, respectively, so that the rotation of either of the spindles h h', caused by carrying the lingers j outward in the position shown in Fig. l, will rotate the four-armed gate so as to withdraw the arm g from between the latch F and the lip h2, allowing the latch F torise as it passes over and in contact with dagger G without depressing the dagger and rocking the shaft G and causing the stoppage of the loom. The vertical sections or tips of the fingers j are held in such position when the arm g is between the latch F and the lip h that the weft-thread as it is drawn in a right line from the selvage edge of the woven fabric to the eye of the shuttle as the shuttle rests in the box, as shown in Fig. l, will press the finger j, against which the thread is drawn, outwardly, rotatingthe spindles and the connected four-armed gate, removing the arm g from the position in which it is shown in Fig. 6, and allowing the dagger G to raise the latch F without rocking the shaft G. As the spindles are each connected by the links m m with the four-armed gate and upon opposite sides the motion of the gate and spindles will be simultaneous, each of the fingers j moving toward or away from the' lay at the same time.

I attach a bar K to the lower side of the breast-beam provided with a rib K', having a beveled end K2. The bar K is so placed that the rib K is brought in the path of the arm d as the lay swings forward, causing the fourarmed gate to rotate' on the bolt b and remove the arm g from between the latch F and the lip h at each forward swing of the lay. The free end of the bar K has a slot K5, in which I hold the stud n, adjustable along the slot and carrying the swinging lever J with its upper end in the path of the edge p of the plate 1J', attached to the lay C. The lever J is placed in such position o n the bar K that the lay in its backward swing will bring the edge p of the plate p in contact with the upper end of the swinging lever J just before it has reached the limit of its backward swing, vibrating the lever J on the stud fn, and bringing the lower end of the lever J in contact with the armd'of thepfour- I armed gate and carrying the arm g between the upper edge of the latch F and the lip h. 7o

the lay swings back, the plate p is brought 8o into contact with the upper end of the lever J, throwing the lower end of the lever forward, as shown in Figs. '7 and 8, against the arm d, thereby rotating the gate and bringing the arm gbetween the latch F and the;

lip 7L, and also carrying the fingers j over the race C in the position shown in Fig. 3. As the shuttle is thrown across the race, the line of the weft-thread is as indicated by the line E2, Fig. l, the tension of the weftfthread carrying the finger 7' on the left of the figure outward, rotating the spindle 7i, and through the link m the fourearmed gate, removing the arm g from between the latch F and the lip h2, and

allowing the latch F to be raised as it isy brought in contact with the dagger G without operating the shipping mechanism as the lay moves forward. In case the weft-thread is wanting as the shuttle is thrown, the finger j is not carried out and the arm g remains in F from rising and causing the dagger G to be depressed as the lay moves forward, thus operating the shipping mechanismand disconnecting the loom from the driving-power.A

As the lay swings back, the plate p passes over the top of the swinging lever J, causing the lower end to rotate the gate and bring the arm g again between the latch F and the lip h, and carrying the fingers j over the race in the position shown in Fig. 3 to be again moved outward, as already described by the action of the weft-thread. In case the arm g is not removed by the action of the weft-'- thread, the latch will depress the dagger, as described, and as the lay advances in its forward swing the arm d is brought into contact with the rib K and the arm g removed from the position between the latch F and the lip h, allowing the rod or shaft G to be rotated for the purpose of again starting the loom.

What I claim as my invention, and desire to secure by Letters Patent, is-

4its place, as shownin Fig. 6, holding the latch IIO l. The combination of a latch pivoted upon` the lay, a rocking gate provided with an arm by which the pivoted latch is locked in position to operate the shipping mechanism, a rocking shaft journaled upon the rigid portion of the loom and operatively connected with the shipping mechanism, a dagger a.ttached to said rocking shaft and placed in: the path of the pivoted latch, spindles j0ur. naled upon the lay and operatively connected with said rocking gate, as described, and finrocking gate having arms g' and d, and bar K,

having a rib K lying in the path of said arm i 5 d, substantially as described.

5. The combination of latch F.With the rocking gate, having arms g and d, bar K, swinging lever J, supported by said bar, and

actuating-plate p, adapted to be attached to 2o the lay, substantially as described.

A JOSEPH D. WESTGATE. W'itnesses:

A. P. BUTLER, RUFUs B. FOWLER. 

